CN208900804U - A kind of valve actuator - Google Patents

Abstract

The utility model discloses a kind of valve actuators, including upper cylinder lid, middle cylinder head, lower cylinder lid, bar, bracket and push rod, the bar runs through the upper cylinder lid, middle cylinder head, the two sides of lower cylinder lid, upper cylinder sleeve is set on the inside of the bar, lower cylinder sleeve, the upper cylinder sleeve respectively with upper cylinder lid, the two sides of middle cylinder head are fixedly connected, the upper cylinder lid is provided with the 4th venthole, the lower cylinder sleeve respectively with middle cylinder head, lower cylinder lid is fixedly connected, the middle cylinder head, lower cylinder lid is ipsilateral to have upward the first venthole and the second venthole.It is filled with the gas of same pressure to upper piston and middle cylinder head and lower piston and lower cylinder lid respectively by the first venthole and the second venthole, increases the area connecting with upper piston, keep its connection closer；Lower piston is enabled to resist push rod in lower section, so that push rod be driven to move upwards；Convenient for the disassembly of the utility model, inspection and maintenance internal structure.

Description

A kind of valve actuator

Technical field

The utility model relates to a kind of valve, specially a kind of valve actuator belongs to valve technology field.

Background technique

Gate valve is an opening and closing element flashboard, and the direction of motion and flow direction of flashboard are perpendicular, gate valve can only make standard-sized sheet and Quan Guan cannot make adjustments and throttle.The advantage is that: valve inner medium channel be it is straight-through, medium is in line flowing, flowing Resistance is small；Medium can be flowed to two sides any direction, be easily installed；Body is simple, and structure length is short, and anufacturability is good, fits It is wide with range；Compact-sized, valve is rigidly good, and channel is smooth, and flow resistance number is small, and sealing surface uses stainless steel and hard alloy, makes It is long with the service life.

Currently, the steering wheel that most gate valves rotate screw rod by using manpower is gone up and down, or use motor It is gone up and down, either 1 valve of which kind of lock all has opening and closing inconvenience.Since gate valve is all cylinder iron to build, its own Quality is extremely heavy, and water consumes a large amount of energy, improves on influencing all to make the opening-closing process of gate valve slow existing for valve in addition Cost.

Utility model content

The purpose of this utility model is that solve the above-mentioned problems and provides a kind of valve actuator.

The utility model is achieved through the following technical solutions above-mentioned purpose, a kind of valve actuator, including upper cylinder Lid, middle cylinder head, lower cylinder lid, bar, bracket and push rod, the bar run through the upper cylinder lid, middle cylinder head, lower gas The two sides of cylinder cap, be arranged upper cylinder sleeve, lower cylinder sleeve on the inside of the bar, the upper cylinder sleeve respectively with upper cylinder lid, middle cylinder head Two sides are fixedly connected, and the upper cylinder lid is provided with the 4th venthole, and the lower cylinder sleeve is fixed with middle cylinder head, lower cylinder lid respectively Connection, the middle cylinder head, lower cylinder lid are ipsilateral to have upward the first venthole and the second venthole, middle cylinder head The other side is provided with downward third venthole, and be slidably connected upper piston on the inside of the upper cylinder sleeve, position among the upper piston Lower section is fixedly connected with push rod, and be slidably connected lower piston on the inside of the lower cylinder sleeve, and the middle section position of the lower piston and push rod is sliding Dynamic connection, the push rod run through lower cylinder lid, are slidably connected with lower cylinder lid, are fixedly connected with bracket below the lower cylinder lid.

Preferably, the connection of the bar and upper cylinder lid, middle cylinder head, lower cylinder lid is to be tightly connected, described Bar passes through nut at upper cylinder lid, lower cylinder lid and screws connection.

Preferably, the middle cylinder head is close to lower cylinder lid, and the distance between middle cylinder head and lower cylinder lid are upper The 30% of the distance between cylinder head and lower cylinder lid.

Preferably, the " T " shape structure of the push rod.

Preferably, the connection of the upper piston and upper cylinder sleeve is to be tightly connected.

Preferably, the connection of the lower piston and lower cylinder sleeve is to be tightly connected.

The beneficial effects of the utility model are:

1. twice of thrust:, can be logical by the first venthole and second simultaneously when the utility model closure needs to open Stomata is filled with the gas of same pressure to upper piston and middle cylinder head and lower piston and lower cylinder lid respectively, and the air pressure at two can It is provided upwards to upper piston and lower piston respectively and the identical thrust of size, upper piston and lower piston drives push rod to transport upwards It is dynamic, sufficient power is provided for the unlatching of valve actuator.

2. the " T " shape structure of push rod: increasing the area connecting with upper piston, keep its connection closer；So that lower piston Push rod can be resisted in lower section, so that push rod be driven to move upwards.

3. bar is connected by nut: convenient for the disassembly of the utility model, inspection and maintenance internal structure.

Detailed description of the invention

Fig. 1 is the utility model schematic diagram of internal structure.

In figure: 1, upper cylinder lid, 2, bar, 3, upper cylinder sleeve, 4, upper piston, 5, middle cylinder head, the 6, first air inlet, 7, Three air inlets, 8, lower piston, 9, lower cylinder sleeve, 10, lower cylinder lid, the 11, second air inlet, 12, push rod, 13, bracket.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Refering to Figure 1, a kind of valve actuator, including upper cylinder lid 1, middle cylinder head 5, lower cylinder lid 10, wear Bar 2, bracket 13 and push rod 12, the bar 2 run through the two sides of the upper cylinder lid 1, middle cylinder head 5, lower cylinder lid 10, institute It states and upper cylinder sleeve 3, lower cylinder sleeve 10 is set on the inside of bar 2, the upper cylinder sleeve 3 is solid with the two sides of upper cylinder lid 1, middle cylinder head 5 respectively Fixed connection, the upper cylinder lid 1 are provided with the 4th venthole 14, and the lower cylinder sleeve 10 is solid with middle cylinder head 5, lower cylinder lid 10 respectively Fixed connection, the middle cylinder head 5, lower cylinder lid 10 are ipsilateral to have upward the first venthole 6 and the second venthole 11, in The other side of cylinder head 5 is provided with downward third venthole 7, and be slidably connected upper piston 4 on the inside of the upper cylinder sleeve 3, the upper work It fills in and is fixedly connected with push rod 12 below 4 intermediate positions, the inside of the lower cylinder sleeve 9 is slidably connected lower piston 8, the lower piston 8 It is slidably connected with the middle section position of push rod 12, the push rod 12 runs through lower cylinder lid 10, is slidably connected with lower cylinder lid 10, described Bracket 13 is fixedly connected with below lower cylinder lid 10.

As a kind of prioritization scheme of the utility model, the bar 2 and upper cylinder lid 1, middle cylinder head 5, lower cylinder The connection of lid 10 is to be tightly connected, and the gas being filled with is not leaked, and guarantees sufficient air pressure, and the bar passes through upper Pass through nut at cylinder head 1, lower cylinder lid 10 and screw connection, so that the disassembly of the utility model, inspection and maintenance internal junction Structure.

As a kind of prioritization scheme of the utility model, the middle cylinder head 5 is close to lower cylinder lid 10, and middle cylinder head The distance between 5 and lower cylinder lid 10 are the 30% of the distance between upper cylinder lid 1 and lower cylinder lid 10, since valve executes machine Structure is all cylinder iron to build, its own quality is extremely heavy, and water is on influence existing for valve actuator so that valve executes machine in addition Structure is in the extremely inconvenient of time-varying to be opened, but when valve actuator has been switched on, valve actuator continues starting will The convenient many of change, therefore double thrust is not needed, when lower piston 8, which is moved upward to middle cylinder head 5, to be resisted, to the second ventilation The gas that hole 11 is passed through can stop, and save cost.

As a kind of prioritization scheme of the utility model, the " T " shape structure of push rod 12, to increase and upper work The area of 4 connection of plug, keeps its connection closer；Lower piston is enabled to resist push rod in lower section, to drive push rod 12 upward Movement.

As a kind of prioritization scheme of the utility model, the connection of the upper piston 4 and upper cylinder sleeve 3 is to be tightly connected, The gas being filled with is not leaked, guarantees sufficient air pressure.

As a kind of prioritization scheme of the utility model, the connection of the lower piston 8 and lower cylinder sleeve 9 is to be tightly connected, The gas being filled with is not leaked, guarantees sufficient air pressure.

Embodiment 1

It please refers to shown in Figure of description 1, it, can be simultaneously by the when the utility model, which is in closed state, to be needed to open One venthole 6 and the second venthole 11 are filled on an equal basis to upper piston 4 and middle cylinder head 5 and lower piston 8 and lower cylinder lid 10 respectively The gas of pressure, air pressure at two can provide upwards and the identical thrust of size upper work to upper piston 4 and lower piston 8 respectively Plug 4 and lower piston 8 drive push rod upward sliding, i.e. twice of thrust pushes push rod upward sliding, are present in middle cylinder head 5 under Gas between piston 8 can be discharged by third venthole 7, and the gas being present between upper cylinder lid 1 and upper piston 4 can It is discharged by the 4th venthole 14, when 8 upward sliding of lower piston is extremely resisted by middle cylinder head 5, is filled with to the second venthole 11 Gas stop entering, that is, be left single times of thrust and push push rod upward sliding.When needing to overhaul the utility model, it is only necessary to unscrew The nut at 2 both ends of bar.

Embodiment 2

It please continue to refer to shown in Figure of description 1, is different in embodiment 1, when the utility model is in opening state State, when needing to be closed, it is only necessary to open the first logical 6 stomatas and the second venthole 11, the gas being filled with inside the utility model passes through First venthole 6 and the second venthole 11 are discharged, and in the state of no air pressure, push rod 12 is due to self gravity slide downward. When push rod 12 is snapped down to certain position, the buoyancy of water causes the speed of 12 slide downward of push rod to slow down, at this moment can be by Four ventholes 14 are filled with gas, and air pressure pushes down on upper piston 8, so that push rod 12 accelerates slide downward, until the utility model Closure.

It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting Related claim.

In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art The other embodiments being understood that.

Claims (6)

1. a kind of valve actuator, including upper cylinder lid (1), middle cylinder head (5), lower cylinder lid (10), bar (2), bracket (13) and push rod (12), it is characterised in that: the bar (2) runs through the upper cylinder lid (1), middle cylinder head (5), lower cylinder Cover the two sides of (10), upper cylinder sleeve (3), lower cylinder sleeve (9) be set on the inside of the bar (2), the upper cylinder sleeve (3) respectively with upper cylinder Lid (1), middle cylinder head (5) two sides be fixedly connected, the upper cylinder lid (1) is provided with the 4th venthole (14), the lower cylinder sleeve (9) it is fixedly connected respectively with middle cylinder head (5), lower cylinder lid (10), the middle cylinder head (5), ipsilateral point of lower cylinder lid (10) It is not provided with upward the first venthole (6) and the second venthole (11), it is logical that the other side of middle cylinder head (5) is provided with downward third Stomata (7), upper cylinder sleeve (3) inside are slidably connected upper piston (4), and the lower section at the intermediate position of the upper piston (4) is fixed to be connected It connects push rod (12), is slidably connected lower piston (8) on the inside of the lower cylinder sleeve (9), the middle section position of the lower piston (8) and (12) It being slidably connected, the push rod (12) runs through lower cylinder lid (10), it is slidably connected with lower cylinder lid (10), the lower cylinder lid (10) Lower section is fixedly connected with bracket (13).

2. a kind of valve actuator according to claim 1, it is characterised in that: the bar (2) and upper cylinder lid (1), middle cylinder head (5), lower cylinder lid (10) connection be tightly connected, the bar (2) pass through upper cylinder lid (1), under Pass through nut at cylinder head (10) and screws connection.

3. a kind of valve actuator according to claim 1, it is characterised in that: the middle cylinder head (5) is under Cylinder head (10), and the distance between middle cylinder head (5) and lower cylinder lid (10) be upper cylinder lid (1) and lower cylinder lid (10) it Between distance 30%.

4. a kind of valve actuator according to claim 1, it is characterised in that: described push rod (12) the " T " shape knot Structure.

5. a kind of valve actuator according to claim 1, it is characterised in that: the upper piston (4) and upper cylinder sleeve (3) connection is to be tightly connected.

6. a kind of valve actuator according to claim 1, it is characterised in that: the lower piston (8) and lower cylinder sleeve (9) connection is to be tightly connected.